A delegation of peaceful alien lands on earth bringing terrible news for humans: earth's life cycle is set to its limits, within three months of life on earth will not be sustainable.
A new international body, the EISC (Earth's international Scientific Community) was quickly established to do targeted researches which eventually confirms the terrible prediction
The aliens offer to to rescue a small number of humans letting other by their own to find way of salvation.
Planet Outrun is about a number of humans and their efforts escape the impending disaster